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EP3923368A1 - Structure d'étanchéité - Google Patents

Structure d'étanchéité Download PDF

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Publication number
EP3923368A1
EP3923368A1 EP20752681.5A EP20752681A EP3923368A1 EP 3923368 A1 EP3923368 A1 EP 3923368A1 EP 20752681 A EP20752681 A EP 20752681A EP 3923368 A1 EP3923368 A1 EP 3923368A1
Authority
EP
European Patent Office
Prior art keywords
gasket
battery case
wall
sealing structure
peripheral surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20752681.5A
Other languages
German (de)
English (en)
Inventor
Tasuku Ono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nok Corp
Original Assignee
Nok Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nok Corp filed Critical Nok Corp
Publication of EP3923368A1 publication Critical patent/EP3923368A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/067—Split packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present disclosure relates to a sealing structure.
  • battery case gaskets which seal against leakage from a gap between a battery case for accommodating a battery for vehicles (e.g., electric car) and a cover for covering the battery case are under development.
  • the battery case gaskets have a long peripheral length and a large plan view shape corresponding to a size of such a battery case. For this reason, because it is difficult to form such a long battery case gasket by press forming, the battery case gasket is necessarily formed by extrusion.
  • Extruded parts which are formed by extrusion have a fixed shape along their peripheral length. Accordingly, in order to attach such a gasket, the extruded part is necessarily subjected to additional processing ,or a groove or the like for holding the gasket is additionally formed on a member to which the gasket is attached.
  • An example of the related art of gasket attachment is provided by Japanese Patent Laid-Open Publication No. 2012-122536 which discloses a gasket of extruded part having through holes for bolt insertion.
  • Another example is provided by Japanese Patent Laid-Open Publication No. 2017-172756 which discloses a sealing structure having a circular groove formed on a member to which the gasket is attached.
  • An object of the present disclosure is to provide a sealing structure which can more simply and securely hold a gasket on an attached member.
  • a sealing structure according to the present disclosure includes
  • a gasket can be more simply and securely held on an attached member.
  • Fig. 1 is a plan view showing the sealing structure according to this embodiment which is attached to the battery case.
  • Fig. 2 is a perspective view showing a part of the sealing structure according to this embodiment including a coupling portion.
  • the sealing structure 100 is a gasket for a battery case which seals leakage from a gap between a battery case 10 and a covers 20 which covers the battery case 10 (see Fig. 3 ), for example.
  • the battery case 10 accommodates a vehicle battery which is mainly used for vehicles such as electric car, fuel-cell car, and hybrid car.
  • the sealing structure 100 according to this embodiment is arranged on an opening side of the battery case 10 as shown in Fig. 1 .
  • the sealing structure 100 includes a gasket 110, welded walls 120, and coupling portions 130.
  • the gasket 110 is held on the battery case 10.
  • the gasket 110 provides hermeticity between the battery case 10 and the cover 20 (see Fig. 3 ).
  • the gasket 110 is an extruded part which is formed of a rubber-like elastic material having a rubber hardness degree not higher than 70 by extrusion.
  • Exemplary rubber-like elastic materials can be provided by a rubber material, a synthetic resin material having rubber-like elasticity, and the like.
  • the gasket 110 includes gasket main bodies 111 which extend along their corresponding edge of the battery case 10 on the opening side as shown in Fig. 1 .
  • the gasket main bodies 111 have a liner elongated shape, and a fixed sectional shape along their entire length.
  • the ends of the gasket main bodies 111 are fitted into the coupling portions 130 so that the gasket main bodies 111 are coupled to each other by the coupling portions 130.
  • the coupling portions 130 are formed of rubber or the like. Accordingly, the gasket 110 has a rectangular frame shape.
  • the gasket 110 is arranged along side walls 11 of the battery case 10 on their upper end sides as shown in Figs. 1 and 2 .
  • the gasket 110 includes sealing portions 112 on its upper end side which bulge outward. The sealing portions 112 will be brought in tight contact with the cover 20 which covers the opening side of the battery case 10 (see Fig. 3 ).
  • the construction of the gasket 110 according to this embodiment will be discussed in more detail later.
  • the welded walls 120 are a bar-shaped member which is formed of metal such as steel and has an L shape as viewed in a cross section.
  • the welded walls 120 are fastened onto the side walls 11 of the battery case 10 on their exterior sides.
  • the welded walls 120 serve as an attachment wall which holds the gasket 110 and guides the cover 20.
  • the welded walls 120 according to this embodiment are attached so that the outer peripheral surface 120a will be arranged on the interior side with respect to an inner peripheral surface 21b of an engagement portion 21 arranged on the outer edge of the cover 20 (see Fig. 3 ).
  • the welded walls 120 according to this embodiment are fastened onto the side wall 11 of the battery case 10 by welding from the exterior side.
  • Fig. 3 is a cross-sectional view illustrating a positional relationship between the gasket and the welded wall of the sealing structure according to this embodiment which are attached to the battery case, and the cover taken along a line perpendicular to a length direction of the gasket main body.
  • the sealing structure 100 achieves sealing performance mainly in the horizontal directions (interior-to-exterior directions) between the battery case 10 and the cover 20.
  • the metal welded walls 120 are fastened onto parts of the side walls 11 of the battery case 10 in proximity to their upper ends 11a by welding from the exterior side.
  • the gasket 110 which includes the sealing portion 112 configured to be in tight contact with the cover 20 for covering the opening side of the battery case 10 is held along the exterior sides of the upper ends 11a of the side walls 11 of the battery case 10 by the welded walls 120 which serve as the attachment wall.
  • the gasket 110 of this embodiment includes the gasket main bodies 111 which include the sealing portion 112 on their upper end side configured to be in tight contact with the inner peripheral surface 21b of the engagement portion 21 arranged the outer edge of the cover 20 as shown in Fig. 3 .
  • a lower end side of the gasket main body 111 is accommodated in an accommodation portion 123 which is arranged in the welded wall 120.
  • the gasket main body 111 of the gasket 110 is formed as extruded part which includes the sealing portion 112 having an inclined surface 112b on the upper end side of the gasket main body 111 when being formed by extrusion so that the gasket main body 111 can be easily fastened along the upper end 11a of the side wall 11 of the battery case 10 by the welded wall 120 without any adhesive.
  • the sealing portion 112 has the inclined surface 112b having a width which increases from its upper end side to its lower end side as viewed in a cross section as shown in Fig. 3 .
  • An outer peripheral end 112a on the outer peripheral side of the sealing portion is arranged on the exterior side at least with respect to the outer peripheral surface 120a of the attachment wall 120.
  • the sealing portion 112 according to this embodiment faces the exterior side on the upper end side of the gasket main body 111, and in addition an upper end 111a of the gasket main body 111 in which the sealing portion 112 is formed is arranged higher than the upper end 11a of the side wall 11 of the battery case 10.
  • the sealing portion 112 when the cover 20 is placed on the battery case 10, an end 21b1 of the inner peripheral surface 21b of the engagement portion 21 first contacts the inclined surface 112b of the sealing portion 112, and the ceiling surface 20a of the cover 20 then presses the upper end 111a of the gasket main body 111. Accordingly, a large part of the sealing portion 112 including the end 112a is compressed and elastically deformed. As a result, the sealing portion 112 according to this embodiment achieves good sealing performance to seal against leakage through a gap between the sealing portion 112 and the inner peripheral surface 21b of the engagement portion 21 by elastically deforming such a large part of the sealing portion 112.
  • the welded wall 120 serves as the attachment wall which is fastened onto the side wall 11 by welding from the exterior side so that the gasket 110 is held along the upper end side of the side wall 11 of the battery case (attached member) 10.
  • the welded wall 120 according to this embodiment includes a holding portion 121 and a partitioning wall portion 122 as shown in Fig. 3 .
  • the holding portion 121 includes the accommodation portion 123 on its interior side which accommodates the gasket main body 111.
  • the partitioning wall 122 is arranged on the exterior side of the holding portion 121, and supports the gasket main body 111.
  • the welded wall 120 has an L shape as viewed in a cross section. That is, the welded wall 120 according to this embodiment has the accommodation portion 123 which accommodates the gasket 110 between the welded wall 120 and the side wall 11 of the battery case 10.
  • the outer peripheral surface 120a of the welded wall 120 is arranged on the interior side relative to the inner peripheral surface 21b of the engagement portion 21 of the cover 20. According to this arrangement, when the cover 20 covers the battery case 10, the welded wall 120 of this embodiment can guide the engagement portion 21 of the cover 20.
  • the cover 20 when the engagement portion 21 of the cover 20 is guided by the welded walls 120, the cover 20 is not positioned in the height direction. For this reason, in order to surely provide hermeticity, it is necessary to prevent an excess load by the weight of the cover 20 applied to the upper end 11a of the side wall 11 of the battery case 10.
  • the upper end 111a of the gasket main body 111 in order to surely achieve sealing performance in the vertical direction between the battery case 10 and the cover 20, the upper end 111a of the gasket main body 111 is arranged higher than the upper end 11a of the side wall 11 of the battery case 10.
  • attachment walls of the sealing structure 100 have been described to include the welded wall 120 which is fastened by welding, means for fastening the attachment wall onto the side wall 11 of the battery case 10 is not limited to welding.
  • the attachment wall may be fastened onto the battery case by other fastening means such as adhesive or thermocompression bonding.
  • the welded wall 120 having a desired shape as the attachment wall for holding the gasket 110 are first fixedly attached onto the exterior part of the battery case (attached member) 10 in proximity to the upper ends 11a of the side walls 11 by welding, and the gasket 110 is then held by the welded walls 120.
  • the gasket 110 can be securely held on the side walls 11 of the battery case (attached member) 10 by a simple structure without additional processing in which fastening through holes, protrusions or the like are formed on the gasket 110 of extruded part formed by extrusion.
  • the gasket 110 can be held in place and provide sealing effects without forming grooves or the like for holding the gasket 110 on the side walls 11 of the battery case 10 by presswork.
  • the gasket 110 of extruded part which is formed by extrusion is not necessarily subjected to additional processing, and grooves or the like for holding the gasket 110 are not required to be formed on the side walls 11 of the battery case 10 as the attached member to which the gasket is attached.
  • hermeticity in the horizontal directions of the battery case 10 and the cover 20 i.e., between the outer peripheral surface on the upper end side the side wall 11 of the battery case 10 and the inner peripheral surface 21b of the engagement portion 21 of the cover 20
  • the sealing structure 100 according to this embodiment has great value in industry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
EP20752681.5A 2019-02-04 2020-01-15 Structure d'étanchéité Withdrawn EP3923368A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019018235 2019-02-04
PCT/JP2020/001051 WO2020162124A1 (fr) 2019-02-04 2020-01-15 Structure d'étanchéité

Publications (1)

Publication Number Publication Date
EP3923368A1 true EP3923368A1 (fr) 2021-12-15

Family

ID=71947458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20752681.5A Withdrawn EP3923368A1 (fr) 2019-02-04 2020-01-15 Structure d'étanchéité

Country Status (5)

Country Link
US (1) US20210226285A1 (fr)
EP (1) EP3923368A1 (fr)
JP (1) JPWO2020162124A1 (fr)
CN (1) CN112005402A (fr)
WO (1) WO2020162124A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11708908B2 (en) * 2020-03-11 2023-07-25 Te Connectivity Solutions Gmbh Seal gasket retention for connector assembly or housing
KR102647369B1 (ko) * 2021-10-21 2024-03-14 서진산업 주식회사 압출가스켓을 이용해 기계적 접합을 없앤 슬라이딩 방식의 상판 조립구조 배터리케이스
CN216620803U (zh) * 2021-11-19 2022-05-27 乐金空调(山东)有限公司 法兰连接限位密封结构
EP4230102B1 (fr) * 2022-02-18 2025-08-20 Geffers Patent GmbH Couvre-joint annulaire
JP7657385B1 (ja) * 2024-06-06 2025-04-04 三菱電機株式会社 防水パッキンおよび操作パネル

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6396644A (ja) * 1986-10-14 1988-04-27 Canon Inc 防水・防滴構造のカメラ
JPH058132U (ja) * 1991-06-11 1993-02-05 株式会社阿保パツキング製作所 環状ガスケツト
JPH10245066A (ja) * 1997-03-06 1998-09-14 Komatsu Kasei Kk 合成樹脂製容器の密閉構造と密閉用ガスケット
JP4521487B2 (ja) * 2005-03-15 2010-08-11 株式会社カシオ日立モバイルコミュニケーションズ 機器ケースの防水構造
JP4424445B1 (ja) * 2009-02-09 2010-03-03 株式会社カシオ日立モバイルコミュニケーションズ 電子機器
JP2011030963A (ja) * 2009-08-05 2011-02-17 Terumo Corp 成分測定装置
JP5760411B2 (ja) 2010-12-08 2015-08-12 Nok株式会社 ガスケット
JP5861427B2 (ja) * 2011-12-07 2016-02-16 富士通株式会社 ガスケット、防水構造、及び、電子機器
CN103731523B (zh) * 2013-12-24 2016-06-22 深圳市宝尔爱迪科技有限公司 防水结构及使用该防水结构的手机
CN103979201A (zh) * 2014-05-27 2014-08-13 孔厚良 一种瓶罐的密封结构
JP6657630B2 (ja) * 2015-07-17 2020-03-04 三菱自動車工業株式会社 電池パックのシール構造
JP6682946B2 (ja) 2016-03-25 2020-04-15 Nok株式会社 密封構造及びガスケット
CN207543438U (zh) * 2017-11-30 2018-06-26 浙江人通电力科技有限公司 一种防雷盒

Also Published As

Publication number Publication date
US20210226285A1 (en) 2021-07-22
WO2020162124A1 (fr) 2020-08-13
CN112005402A (zh) 2020-11-27
JPWO2020162124A1 (ja) 2021-11-04

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